As Factor’s first platform (not counting the bonkers Vis Vires model that CEO Rob Gitelis inherited when he bought the company from bf1systems), it feels right that the latest generation of the O2 sits at the pinnacle of the range. The brand’s line-up may have diversified down the years, but Gitelis has made sure the O2 hasn’t lagged behind in performance terms, for it has been revised every other year since its inception in 2017.
This revision feels particularly significant. It uses composite fabrication techniques from the Ostro VAM aero bike to match its bulkier counterpart in stiffness terms. It uses sharply truncated tube
